thumbnail

Seismicity associated with dome growth and collapse at the Soufriere Hills Volcano, Montserrat

Geophysical Research Letters

By:
, , , , , , , , and
DOI: 10.1029/98GL01778

Links

Abstract

Varied seismicity has accompanied growth and collapse of the lava dome of the Soufriere Hills Volcano, Montserrat. Earthquakes have been classified as either volcano-tectonic, long-period or hybrid, and daily variations in the numbers of events have mapped changes in the style of eruption. Repetitive hybrid earthquakes were common during the first months of dome growth. In July 1996 the style of seismicity changed and regular short-lived hybrid earthquake swarms became common. This change was probably caused by an increase in the magma flux. Earthquake swarms have preceded almost all major dome collapses, and have accompanied cyclical deformation, thought to be due to a built-up of pressure in the upper conduit which is later released by magma moving into the dome.Varied seismicity has accompanied growth and collapse of the lava dome of the Soufriere Hills Volcano, Montserrat. Earthquakes have been classified as either volcano-tectonic, long-period or hybrid, and daily variations in the numbers of events have mapped changes in the style of eruption. Repetitive hybrid earthquakes were common during the first months of dome growth. In July 1996 the style of seismicity changed and regular, short-lived hybrid earthquake swarms became common. This change was probably caused by an increase in the magma flux. Earthquake swarms have preceded almost all major dome collapses, and have accompanied cyclical deformation, thought to be due to a build-up of pressure in the upper conduit which is later released by magma moving into the dome.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Seismicity associated with dome growth and collapse at the Soufriere Hills Volcano, Montserrat
Series title:
Geophysical Research Letters
DOI:
10.1029/98GL01778
Volume
25
Issue:
18
Year Published:
1998
Language:
English
Publisher:
American Geophysical Union
Publisher location:
Washington, DC, United States
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geophysical Research Letters
First page:
3401
Last page:
3404
Number of Pages:
4